Pearl-knitting machine



' July 2o, 193.17.A

v. w.I MEHNl-:RT l 2,087,650

PEARL KNITTING MACHINE Filed sept. ,14, 195e /N VEA/TOR.-

Valk/ian, lWader M-EH/VERT f; MT/@ Patented Julyi 2o, 1937 V werkeAktiengesellschaft, SiegTnar-Schonau,A

Germany, a company of Germany Application September 14, 1936, Serial No.100,589 In Germany July 8, 1935 3 Claims. (Cl. Gli-111) The inventionrelates to a pearl-knitting machine. 1n machines of this type a needleis moved by its needle heads at each end, by means of pushers, whichengage in the needle heads.

5 Before the engagement, the needle latches must be opened andheretofore it was customary to use for this ,purpose alatch openertravelling alone",r with the hook slide, transverse to the direction ofmovementof the needles. The adjustment of the opening parts, which mustt under the latches of the needles crossing them, is difficult.Moreover, it wasv hitherto necessary to use covers or guards along thefront edgeof thene'edle bed to keep the needle down at the bottom of'its channel and this made inspection of the parts diicult and preventedthe front ends of the needle channels from being reached. I

This defect in the known types of pearltting. machines is overcome bythe arrangement according to the invention. A, The essential feature ofthe invention is that the'needle pushers have a forwardly extendingprolongation with a bottom knife edge, which is spaced from the bottom.sliding edge by an Vamount equal to the height of the needle head, theneedle in its mid- 3o is linked Vup with theneedle head, the end ef theextension rests on the bend of the needle. Thus -the forwardly extendingprolongation of the needle pusher fullls a double function. First itopens the needle by passing under the latch of the needle before thepusher and needle head engage with each otliensecond it keeps the needledown onv the bottom of the needle channel as long as the needle pusheritself is kept down.l The needle head is released as soon asthatposition of the lock face arrives at the pusher which enables thelatter to deflect upwards for uncoupling.

In order that, uponfthe return of the' pushers during uncoupling, theneedle latches may be prevented from beingclosed again by the returningpushers, brushes of well known kind may be provided on the lock slide,these taking vthe place of the otherwise usual needle guards. DuringYthe withdrawalv of. the pushers, these brushes 50 sweep over, theneedle latches opened by the knife-edges and thereby'ensure their beingkept open.

The drawing shows an embodiment of the in- 4vention by way of example, AFig. 1 being a cross-section through a needle board on the machineaccording to the invention;

Fig. 2 a partial cross-section during the opening of a latch; Fig. 3 alongitudinal cross-section;4 5

Fig. 4 a. cross-section during the uncoupling; and -V i Fig. 5 a,cross-section of a special brush device. As will be seen from thedrawing, the needles l have an upwar'd bend in the middle of the 10shank 2, the top edge of this bend beingon the same level as the topedge of the needle heads 3. The pushers 4 are provided with an extensionpiece 6 continuing beyond the coupling hook 5, the undersidev of thisextension piece being on a 16 level with the needle head 3 and with theoffset portion of the shank 2. The pushers 4 are held downfby the bridgemember 8 arranged lon the carriage or slide l and consequently thepushers in turn, by means of the extended end 6, keep the 20 shank 2,and, therefore, the needles firmly-down at the bottom of the needlechannel. Below, the shank 2 is cui; away to such an extent that thestitchesare not enlarged when sliding over the n needles. dle portionbeing bent up to the height ofthe The extensionpiece Ghasa sharpedge 9at its 25 front end and by meansof this, the latches l0 of the needles lcan be opened, before the pusher comes to couple up with the needle, asillustrated in Fig- 2. As Fig. 4 indicates, the lmcoupling ofthe pusherbecomes possible during the withdrawal of the needle l by reason of thebevelling'of the4 edge Il of the hook'5, that is. as soon as the pusher4 passes under the recess I2 of the bridge 8 (see 35 Fig. 3) andistherefore able to deflect upwards.

The brush I3 indicated in Fig. 5 serves principally for preventing thelatches I0 from shutting, on the return of the needles. Provided it ismade of suilcient width however, it can-also act as a 40 latch-opener.In this ce, the edge .9 need not open the latch at all, or it only comesinto operation for latches which are diilcult to move and which thebrush has previously been unable to open.

1. In a pearl-knittingA machine with a pair of Vopposite vflat needlebeds a plurality of double ended needles'in said beds, needle pushersfor moving the needles, said pushers having a for- 5g wardly projectingextension with a bottom knife edge whichis spaced from the bottomsliding edge by an amount equal to the height of the needle, the nredlein its central portion being bent up to the height of the bottomknife-edge on the 55 ing into such proximity with the needle head,

that when the coupling hook in the needle head is coupled, the end ofthe extension portion rests 5 on the bend of the needle.

2. In a pearl-knitting machine withl a pair of opposite flat needle bedsWithout the usual needle guards in the slide, a plurality of doubleended needles in said beds, needle pushers for moving the needles, saidpushers having a forwardly projecting extension with a bottom knife edgewhich is spaced from the bottom sliding edge by an amount equal to theheight of the needle, the needle in its central portion-being bent up to15 the height of the bottom of the projecting extension, the bendcontinuing into such proximity with the needle head, that when thecoupling hook in 'the needle head is coupled, the endwof the extensionportion rests on the'bend of the needle,

20 brushes on the carriage, sweeping over` the latches opened by theknife edges and thus preventing them from shutting.

extension of the' needle pusher, the bend continu- 3. In a pearlknitting machine with a pair of opposite flat needle beds without theusual guards on the slide'a plurality 'of double ended needles in saidbeds, needle pushers for moving the needles, said pushers having a,forwardly projecting extension which is spaced fromthe bottom slidingedge by an amount equal to the height of the needle, the needle in itscentral portion being bent up to the height of bottom of the projectingextension, the bend continuing into such proximity with the needle head,that lwhen the coupling hook in the needle head is coupled, the end ofthe extension portion rests on the bend of the needle, the movingpushers being pressed down by means of a bridge member situated in thecarriage moving over the pushers, this bridge member being provided withrecesses which allow the pushers to deect upwards for the purpose ofuncoupling.

VOLKHART WALTER MEHNERT.

